<!DOCTYPE html>
<html>

<head>
	<meta charset="utf-8">
	<title>菜鸟教程(runoob.com)</title>
</head>

<body>

	<p>本例调用的函数会执行一个计算，然后返回结果：</p>
	<p id="demo"></p>
	<script>
		function myFunction(a, b) {
			return a * b;
		}
		document.getElementById("demo").innerHTML = myFunction(4, 3);
	</script>

</body>

</html>